集成Emacs复制/粘贴与系统复制/粘贴

I have (cua-mode t) in my .emacs, so that C-c is copy and C-v is paste just like most other programs on my desktop (Ubuntu, Gnome, Linux). However, Emacs does not seem to share the clipboard/copy buffer with other programs.I have (cua-mode t) in my .emacs, so that C-c i